The Cub Winders are a user-friendly, travel-ready winder. The Module 1.8 is pre-programmed at 900 turns per day rotating bi-directionally. Additionally, these winders can be stored in custom Cubbies and can be stacked to create a larger modular unit. Patented rotation programs: Intermittent rotation with pause and sleep phases pre-programmed. Wood frame construction, distressed pebble faux leather exterior. Drum size: 71mm deep and 77mm wide. Powered by two AA batteries (not included). Also runs on AC power: 110-240V adapter included. Dimensions: 5.3 inches W x 4.5 inches D x 5.2 inches H